reCAPTCHA test is not shown in preview or on contact form

I have WP, theme (Envision) and all the plugins updated. I installed and activated this plugin, entered the right keys - but reCAPTCHA test is not shown in preview in BWP reCAPT - Theme options or on contact form on contact page http://villa-anastazija.hr/?page_id=20. I done all by the book but nothing, and i don't know what to do